Hexby cutting



(No Model.)

H. CUTTING.

- SASH HOLDER. No. 291,697. Patentd Jan. 8, 1884.

fave/2220).

Unir en tirarse Ferarri* trier-r.,

HEXBY CUTTING, OF BUFFALO, NEV YORK, ASSIGNOR OF ONE-HALF TO THOMAS J.DE LANEY, OF SAME PLACE.

SASH-HOLDER.

SPECIFICATION forming part of Letters Patent No. 291,697, dated January8, 1884.

Application iilcd October Q, 1883. (No model.)

To all whom it may concern.-

Beit known that I, HENRY CUTTING, of the city of Buffalo, in the countyof Erie and State of N ew York, have invented a new and usefulImprovement in Sash-Holders, of which the following is a speciiication.

This invention relates to an improvement in that class oi' sash-holderswhich consists, essentially, oi" a screw-bolt working in a threadedopening or screw-nut in the sash, and-provided with a bearing-pieceadapted to be pressed against the window frame or casing by turning thescrew-bolt, thereby locking the sash in position.

The object of my invention is to produce a sash-holder of this characterin which the req-' uisite longitudinal movement of the clampingpiece iseffected very rapidly and without making the screw-thread so steep thatits holding-power will be impaired.

Hy invention consists, to these ends, of the improvement in theconstruction of the sashholder, which will be hereinafter fully setforth, and pointed out in the claims.

In the accompanying drawings, Figure l represents a sectional elevationoi' my improved sash-holder. Fig. 2 is a cross-section in line .c x,Fig. l. Fig. 3 is an end view ofthe screwnut and bearing-piece. Fig. 4is a longitudinal section of the bearing-piece. Fig. 5 is a similar viewofthe screw-nut. Fig. 6 is a sectional elevation, showing my improvedsashholder applied to the window of a railwayear. Fig. 7 is an elevationof this sash-holder. Fig. S is a cross-section in line g/ y, Fig. 7.

Like letters ot' reference refer to like parts in the several figures.

A represents a portion of the window casing or frame, and B a portionofthe side piece of the sash. C represents the screw-bolt of thesash-holder, and D the screw-nut secured in the sash. The screw-nut D ismade cylindrical on its exterior surface and sea-ted in a cylindricalreeessformed in the edge ofthe sash, in which it is prevented fromturning by longitudinal tapering ribs d, which are formed on the outersurface of the screw-nut, and embed themselves in the wood as thescrew-nut is driven into the recess.

c represents the internal screw-thread formed in the inner or rearportion of the screw-nut.

j' represents a cylindrical cavity formed in the outer or front portionof the screw-nut.

G representsthe bearing-piece arranged in the cavity f, so as to slidetherein toward or from the wi ndow-casing A, and provided with aninternal screw-thread, h. The screw-bolt C is constructed with twothreaded portions, i and j, which engage, respectively, in the internalscrew-threads, e and 7i, of the screw-nut D and bearing-piece G. Thescrew-threads in the screw-nut D and bearing-piece G are arranged inopposite directions, the threads c and 'i being represented as left-handthreads and the threads h and j as right-hand threads. The bearing-pieceG is guided in the recess f by a longitudinal rib, 7.', formed on theoutside ofthe bearing-piece and projecting into alongitudinal groove, Z,formed in the inner wall of the recess, whereby the bearing-piece G isprevented from turning, but permitted to move lengthwise in the recessofthe screw-nut. Upon turning the screw-bolt O in one or the otherdirection a quick axial movement is imparted to the bearing-piece G,proportionate to the pitch of the two screw-threads, and thebearing-piece is rapidly pressed against the window-frame to lock thesash, or removed therefrom to release the sash, as may be desired. Thedesired quick movement of the bearingpiece is attained without makingthe screwthreads so steep as to impair their holdingpower. Y

In the construction represented in Figs. 6, 7, and 8 the screw-nut D issecured to the surface ofthe sash by ilanges m and screws a, and thebearing-piece G is constructed in the form of a dovetail and guided in adovetail recess in the screw-nut. The bearing-piece is provided at itsouter end with a projection or stud, o, which is adapted to engage overprojeetionsp, secured to the window-casino'. This construction isespecially designed for useon the windows of railway-cars, which cannotbe securely locked in position merely by the friction of thebearing-piece G against the side of the window-casing. The screwthreadsare preferably made so steep that half a turn of the -are readily castcomplete of iron or other suitable metal and put together Withoutrequiring any fitting, and the device is therefore produced atcomparatively small expense.

I claim as my invention- 1. In a sash-holder, the combination, with ascrew-bolt having a right-hand and a left-hand screw-thread, of a fixedscrew-nut receiving one of said screw-threads, and a movablebearing-piece Working on the other screw-thread, substantially as setforth.

2. The combination, with a screw-bolt, C, provided with a right-hand anda left-hand screw-thread, of a screw-nut, D, provided with ascrew-thread, e, and a cavity, f, and a bearing-piece, G, provided witha screw-thread, h, and guided in the cavity f, substantially as setforth.

3. The combination, with a screw-bolt, C, having right and left handscrew-threads i and j, of a fixed nut, D, having a screw-thread, e, arecess, f, and a longitudinal groove, Z, and a bearing-piece, G,constructed with a screwthread, h, and rib 7c, and arranged in therecess f, substantially as set forth.

HENRY CUTTING. Vitnesses:

JNO. J'. BONNER. THoMAs J. Dn Lanny.

